Playing with statistics modification hints
How often did you have the situation when performance problem disappeared just after refreshing object statistics? Of course it is nice to solve the problem quickly and simply, but is always better to understand what has exactly happened. Recently I had such a problem and…
Online Statistics Gathering for ETL – Part 2
In the first part we looked at general preconditions for online statistics gathering to work and some restrictions. In this part we’ll take a look at what happens with direct path loads into partitioned tables. Partitioning There are also some points to consider while working…
Online Statistics Gathering for ETL – Part 1
Online Statistics Gathering has been introduced in 12c and is a very handy feature for ETL and batch jobs developers. However the devil is in the detail. There are some points to remember. Let’s take a closer look. Introduction If you are not familiar with…
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